作者yauhh (喲)
看板Programming
標題Re: [問題] 為什麼Programmer無法分清萬聖節和聖誕節
時間Sun Apr 26 19:35:51 2009
※ 引述《bc5678 ( )》之銘言：
: 摘自 Expert C Programming - Deep C Secrets中的一段
: Like the Potrzebie system, the joke about programmers' confusion over
: Halloween and Christmas Day depends on inside knowledge of numbering systems.
: The reason that programmers can't tell Halloween from Christmas Day is
: because 31 in octal (base eight) equals 25 in decimal (base ten). More
: succinctly, OCT 31 equals DEC 25!
: When I wrote to Professor Knuth asking his permission to tell the story, and
: including a draft copy of the chapter, he not only agreed, he marked numerous
: proofreading improvements on the text, and pointed out that programmers can't
: distinguish NOV 27 from the other two dates, either
: 來源: http://my.safaribooksonline.com/0131774298/ch08
: OCT 31和 DEC 25的關係是很清楚
: 不過Knuth講的NOV 27就看不出端倪了, 上面兩個跟感恩節有啥關係
: 難道是念數學的人才看得懂的joke?
英文月份 October 本來應是8月, November 9月, December 10月
OCT 31 = Nov 27 = DEC 25,
因為八進位31和十進位25換算為九進位,就是27.
--
話說十進位25唸成「二十五」,那麼八進位31是否該唸成「三八一」?
--
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◆ From: 61.231.64.207
※ 編輯: yauhh 來自: 61.231.64.207 (04/26 19:40)
1F：→ bc5678:簽名檔有冷笑話的fu! 123.204.164.21 04/26 19:42
2F：推 BDFishX:October 不是10月嗎?Nov 11月，Dec 12月? 140.112.233.95 04/26 20:51
3F：推 BDFishX:喔，我剛剛查到了，過去真的是8/9/10月XD 140.112.233.95 04/26 20:53
4F：→ yauhh:其實從字根就看出端倪了 61.231.64.207 04/26 20:54
5F：推 ksmrt0123:謝謝解惑... 差點誤會Knuth... 219.68.71.218 04/26 23:40
6F：→ adrianshum:八進位 71 不就變成... 202.155.236.82 04/28 14:54
7F：→ bc5678: 107 123.204.164.21 04/28 18:01
8F：→ adrianshum:樓上：我意思是唸成..... 220.246.198.75 04/28 22:18